Analysis of parameters associated with hypotension requiring vasopressor support after carotid angioplasty and stenting

Journal of Vascular Surgery
Susan M TrocciolaPeter L Faries

Abstract

Systemic hypotension has been observed for up to 36 hours in response to stimulation of the carotid baroreceptor by carotid angioplasty and stenting (CAS). The aim of this study was to identify risk factors and cardiac outcomes for postprocedural hypotension requiring vasopressor support after CAS. Between 2003 and 2005, 143 patients (87 men; mean age, 75 years) with high-grade carotid artery stenosis (mean, 87.3%) were treated with CAS and prospectively entered into a vascular registry. Data were retrospectively analyzed to determine factors predictive of hypotension requiring vasopressor support after CAS. Atropine and appropriate intravenous crystalloid solution were administered during CAS. For the first 30 patients, atropine was only used for symptomatic patients but then became routine and was used for all patients with primary carotid stenosis. Hypotension (systolic blood pressure <90 mm Hg or a mean arterial blood pressure <50 mm Hg) unresponsive to conservative measures was treated with vasopressors (phenylephrine or norepinephrine). Patients were stratified into three groups based on hypotension requiring vasopressors: (1) no vasopressors, (2) vasopressors for < or = 24 hours (short duration), and (3) vasopressors for...Continue Reading

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